Subfile screen with lagging enter key activity

I have a program which displays a subfile which is
displayed for reference, and a control format for the
subfile which has several entry fields.  Items are
brought up to the control spec fields when a function
key is pressed.  The function keys are displayed as part
of the subfile.  When a function key is pressed, the
program runs the necessary steps to move the data to the
input fields and display it in the control spec fields.
but when I hit the enter key (to print labels based on
the data selected or entered) I always have to hit it
twice. Hummmm!

I know that the program sees the enter key because when
I put the program into debug, I go into the code.  Funny
thing is that when I put it into debug, I don't have the
enter key twice problem.

Any Ideas?

Thanks,
Bill Parks